Stereopticon.



A. F. VICTOR.

STEEEOPTIOON.

APPLICATION FILED FEB. 26, 1912.

Patented May 27, 1913.

5 SHEETS-8HEET 1.

A. F. VICTOR.

STEREOPTIGON.

APPLICATION FILED FEB. 2a, 1912.

1,062,622. Patented May 27, 1913 5 SHEETS-SHEET 2.

A. F. VICTOR.

STEREOPTICON.

APPLICATION FILED FEB.26,1912.

1,062,622. Patented May 27, 1913.

6 SHEETS-SHEET 3.

.lllllllllllllllll A II'JUUHHIH A. F. VICTOR.

STEREOPTICON.

APPLICATION FILED FEB.26,1912.

1,062,622. Patented May 27, 1913.

6 SHEETS-SHEET 4 A. P. VICTOR.

STEREOPTICON. APPLICATION FILED FEB. 26

Patented May 27, 1913.

5 SHEETS-SHEET 5.

UNITED srATEs PATENT orrtos.

ALEXANDER FERDINAND VICTOR, OF DAVENPORT, IOWA.

STEREOPTICON.

Application filed February 26, 1912.

To all whom it may concern:

Be it known that I, ALEXANDER F nam- NAND Vic'roR, a subject of the King of Sweden, residing at Davenport, in the county of Scott and Stateof Iowa, have invented new and useful Improvements 1n Stereopticons, of which the following is a full, clear, and exact description.

My invention relates to stereopticons or apparatus for projecting transparent pictures upon a screen by means of a powerful light placed back of them. Heretofore the casing of apparatus of this kind has been mounted upon a rectangular supportingframe, whose longitudinal members were jointed to and adjustable vertically on leg members and given a certain amount of flexibility to the frame in order to obtain the proper focal axis of projection and adjust the pictures straight on the screen. addition to this, it has been customary to separate the lamp housing and the lens carrying device. thus making it necessary to adjust each of them and rendering it more difiicult, in view of the jointed character of the supporting-frame to keep them in focal alinement during the adjustment of the same to and from each other to get the proper focus.

The objects of my invention are to support all of the parts of this stereopticon concentric to the focal axis upon one base; to provide for the adjustments of all of said parts in order to properly project the pictures on the screen without disturbing the focal alin-ement thereof; to accomplish all of these adjustments easily and conveniently, and to provide a light which will always be in alinement with the focal axis, which will always be exposed to the View of the operator and readily manipulated by him, and which has a casing that allows for the escape of the heat generated thereby and affords a protection to the operator; substantially as will hereinafter be described, and as particularly pointed out in the claims.

In the drawings: Figure 1 is a side view of my invention. Fig. 2 is a longitudinal vertical section. Fig. 3 is a transverse section taken on dotted lines 33, Fig. 2. Fig. 4 is a transverse section taken on dotted lines M, Fig. 2. Fig. 5 is a View of the front end of the machine with the lens carr er removed, and the telescopic support- Specification of Letters Patent.

Patented May 2'7, 1913.

Serial No. 679,940.

ing bars in section in the plane indicated by the dotted line 5, Fig. 2. Fig. 6 is a fragmentary view showing a side elevation of the lens-tube in its reversed osition, and the front part of the housing that supports the picture-slides in longitudinal section. Fig. 7 is a transverse section of the lower broken away portion of the lamp-housing taken in the transverse plane indicated by the dotted line 7, Fig. 2. Fig. 8 is a rear end view of the lamp-chamber. Fig. 9 is a horizontal central section taken in the plane of the focal axis of the apparatus. Fig. 10 is a sectional detail of the holder for the carbon-electrodes taken on line l0-l0, Fig. 9. Fig. 11 is a transverse vertical section of the clamping means for the telescopic adjusting rods.

Referring to the drawings, A represents a. comparatively heavy base and of such diameter as to insure the stability of the structure of the stereopticon support-ed thereby. This base has a pivotal lug a projecting up from its center to which the bifurcated lug.

b, projecting downward from a saddle" B, is pivotally and adjustably secured by means of bolt 0, and a nut C. Bolt 0 extends out to the side of the apparatus, and a sleeve C", is interposed between said nut and the lug 3) so as to bring the said nut within convenient reach of the fingers of the operator, substantially as shown in Figs. 3 and 4 of the drawings.

The saddle B comprises a segmental frame the concave side of which is uppermost and the curvature of which. is struck from the center of the focal axis of the apparatus, and this saddle supports and has secured thereto a semi-circular metal block or pillow D, that directly supports the condensing lenses E and E, and also the slide-holding elements, substantially as hereinafter more fully explained. Pillow D has flanges (1],, d, that project from the inner semi-circular surface thereof, and the concaved edges of these flanges are rabbeted on the side nearest the end edges of the pillow, to form channels or seats for the lower half of the circumferential edges of the condensing lenses. An annulus or ring F, the radius of'whose inner circumference is the same as the radius of the inner curved surface of flange (Z, is so cured to the rear edge of pillow' D by means of the screws 6, e, and completes the rear wall of the channel in which the lower half of the circumferential edge of the lens E is seated. The front end portion of the .pillow is extended a short distance beyond flange d, and the radius of the inner curved surface of this extension is the same as that of the pillow between its flanges (Z and d, and immediately next flange d this extension is provided with a. circumferential channel f which is engaged by and forms a seat for the circumferential flange g projecting outward from the rear end of the circular frame constituting the slideholder G. The inner circumference of this circular-frame of the slide-holder, is of the same radius as the inner circumference of flange d, and when it is seated in the channel f its rear surface constitutes the front wall of the channel or seat in which the lower half of the circumferential edge of the forward condensing lens is seated.

The lenses E, E, are arranged so that their convexed surface face each other, and when in the position shown in Fig. 2 of the drawings, and when the slide-holder is seated in the pillow, said lenses and slideholder are secured in place by means of a semi-circular cap II, which latter is an exact replica of pillow 1) except that it is turned upside down. The butt edges of this cap are adapted to be seated upon the butt edges of pillow I), and are provided with openings into which dowel pins y', y, projecting upward from the pillow are adapted to enter and retain the cap in the position, shown in Fig. & of the drawings. Flat springcatches I are secured to the inner surface of said cap near its butt edges by means of suitable rivets or bolts, in such manner that their free ends project beyond the butt edges of the cap and their hooked extremities catch in notches I; in the inner surface of the pillow and retain the same thereon. These catches are provided with headed pins K that extend out through suitable apertures in the cap, and by pressing inward upon these pins the catches will release from the pillow and the cap can he lifted off there from. \Vhen thus removed lenses 1), E can be easily lifted and taken out of the apparatus and cleaned and replaced whenever desired. The slide-holder G can also be removed, if desired.

The inner circuinferential groove ll of the inner surface of the forward extension of the cap and the grooves Z of the pillow form a continuous circumferential channel for the circumferential flange y of the pictureslide-holder G to move and rotate in, when desired. This slide-holder comprises a eii= cular front part G, and the rear circularframe q, hcreinbeforc referred to, which is greater in diameter than said front portion, and these front and rear portions are connected by segmental webs m. m, that are located diametrically opposite each other, and

space apart the said front and rear portions to permit of the insertion and transverse movement of the sl de-frame N between them. This slide-frarw is similar to those now in common use, and is shown in dotted lines in Fig. 3 of the drawings. It is adapted to fit snugly in the transverse passageway made for it between the front and rear portions of the slide-holder, and by reason of the rotatable character of the latter, the slide, after it is brought transverse into focus, can be tilted in one direction or the other so as to display the picture straight upon the screen. In the event of the picture being arranged so that its vertical dimensions are lengthwise the slide, said slideholder can be rotated until the slide is perfectly vertical.

IIach wing of the saddle is provided with depending ears, 2, 2, and these ears are provided with longitudinal openings through which longitudinally disposed tubes 3, 3, extend and are adjustably secured by means of a set-screw 41. The rear ends of these tubes are, preferably, connected by a suitable cross-member r, and their front ends are split longitudinally and exteriorly screw-threaded and engaged by milled-nuts t3. Suitable rods 8 are telcscoped into, the front ends of tubes 3 and the forward ends of said rods 8 are connected by a cross-bar 9, which latter, at its center of length, is provided with a boss 8 which is perforated vertically to provide a seat for the reduced lower end of a standard 10. The upper end of this standard is made into a circular frame 11. the center of the opening through which alines with the focal axis of the reduction lenses. The circular opening of this frame is provided with means, which it is unnecessary to explain in detail, for bolding the longitudinally adjustable tube X containing the projecting lenses Y of the apparatus.

Standard 10 is rotatable and is secured in the position, shown in Fig. 2, or a position the reverse thereof, by a set screw 12, tapped through the front part of the bar 9. Itis obvious that by drawing the telescopic bars or rods 8 out of the tube 3 a sufficient distance, the lens-tube X can be reversed and by forcing rods 8 back into tube 3 again, the tube X can be made to enter the slideholder, and thus make a more compact body of the apparatus when it is desired to transport the same from place to place. By turning not 6 so as to move toward the front; ends of tube 3, rods 8 can be clamped invany longitudinal positioh to which they may be adjusted. I

Secured to and projecting rearwardly a corresponding distance from the annulus F are inner and outer sheet-metal cylinders, 13 and 14, respectively, constituting the walls of the housing that contain the lamp.

25 and a head 21 that closes the rear of the 50 the carriers 65 kind of an electric The rear ends of these cylinders are connected to a ring 15, and form the walls of the housing that contain the lamp. The screws (2. e, hereinbefore referred to, are

tapped through ring 15 and connect the same to annulus F and by tightening up these screws the cylders 13 and 14 are retained in a spaced rtiation. The inner cylinder 13 is provided with a circumfcrential series of openings 16 located about its ccnter of length and the outer c linder 14 is provided with a forward circumferential se ries of openings 17 and a rear circumferential series of openings 18, substantially as shown. The ar'angement of these cylin- 20 of the lamp-housing is closed by the lampcarrier which consists of a ircular angle iron frame 19, a. cylindrical shell 20, whose rear end is secured to the outer (.lI'CUlIlfQ!" ence of the horizontal portion of frame 19,

center opening in frame 19, in any suitable manner.

The lamp comprises a bracket that consists of a flat strip of metal which is se- 36 cured at its center of length to the center of head 21, preferably, by the bolt of a suitable handle 25. and its end portions arc.

preferably, bent forward at an angle of f0rty-five degrees (45) to the focal axis of the apparatus. These forwardly bent end portions or wings 31, 31, are provided with openings therethrough and the reduced forward parts of tubular carriers 22, of suitable insulating material are inserted therethrougl'i and through alining openings made in the head 21, until the shoulders resulting from said reduction bear against ';Wings 31. Suitable cscutchcons are placed against the rear ends of these carriers 22,

4-5 and thc latter are secured in place by screws 33, tapped longitudinally through them alongside the bores thereof, into said wings.

Carbon-clcctrodes 22, 22, are inserted longitudinally into and through the bores of 22, until their for aid ends touch or are near enough to arc at a point intersected by the focal axis of the lenses. and they are retained in this position by seating them within a metallic V shapcd 155 trough 35. longitudinally disposed and re- Eained within the bore of each carrier, and by a flat spring 36, arranged longitudinally within the bores of each carrier opposite to Llie side edges of trough 35. The pressure to which the carbonsare subjected between this trough and spring will retain them in any. position to which they may be adjusted longitudinally, and will permit them to be revolved on their own axes to get the right arc. Suitable contacts K7, are secured to and pierce the lower segments of the carrier 22, and connect with the metallic troughs. Other means for conveying' electric current to the carbon-electrodes may be adapted if desired.

It will be observed that by this novel arrangement of the carbon-electrodes the are is always intersect ed by the focal axis of the apparatus, and that said electrodes can be adjusted in or out, or rotated on their axes, independent of one another, to get the desired result, which the. operator can observe through the peep-hole 3t The frame 19 is provided at points diametrically opposite each other, preferably, in a horizontal plane of the focal axis of the apparatus with rods 23, but project for ward through suitable tubes 24, 24, Which latter connect annulus F and ring 15. The lal'np carrier can be drawn rearwardly out of the lamp'housing sufficiently far to permit of the dpcrator manipulating the carbons"or cleaning the interior of the housing, or for other purposes, by means of handle 25, and in this position it will be sustained by the rods 23. Vhen it is desired to close the rear end of the lamp-housing, the lamp-- carrier is moved forward until the bolt 26, (which is tapped through the lowermost segment of the circular frame 19, and extends forward through the ring 15 between the cylinders 13 and 14, and has its forward end terminating a distance corresponding to that between the circular frame 19 and the annulus F) strikes 2 gainstsaid annulus.

The principal feature of my improvement is the alinclnent of all of the parts of my improved stereopticon consisting of the lamp, condensing lenses, slide and the projecting lenses in the focal axis of the apparatus, and the easy manner with which said parts may be adjusted with relation to each other to accomplish the perfect projection of the picture on the screen by an operator not possessing the degree of expert ability heretofore required in the operation of apparatus of, this kind.

\Vhat I claim as new is:

1. A stereoptieon comprising projecting lens, a slide-holder. condensing lenses, and a housing for a lamp arranged in the order stated concentric to the same focal axis, and supported by said housing and carbon-electrodes disposed lengthwise at an angle to each other and at angles to said focal axis in said housing in the same horizontal plane and arcing at a point intersected by said axis.

2. A stcrcopticon comprising projecting lens, a slide-holder, condensing lenses, and a housing for a lamp, and a longitudinally adjustable rear end for said housing arranged in the order stated concentric to the same focal axis, and carbon-electrodes mounted in the same horizontal plane in said adjustable rear end and disposed lengthwise at an angle to each other and at angles to said focal axis in said housing and arcing at a point intersected'by said axis.

3. A stereopticon comprising projecting lens, a transversely rotatable slide-holder, condensing lenses, and a housing for a lamp arranged in the order stated concentric to the same focal axis, and carbon-electrodes disposed lengthwise at an angle to each other and at angles to said focal axis in said housing in the same horizontal plane and arcing at a point intersected by said axis.

4. A stereopticon comprising projecting lens, a slide-holder, condensing lenses, and a housing for a lamp arranged in the order stated concentric to the same focal axis, carbon-electrodes disposed lengthwise at an angle to each other and at angles to said focal axis in said housing and arcing at a point intersected by said axis, a telescopic end member in which said electrodes are mounted, and a single base supporting the aforesaid parts.

5. A stereopticon comprising a projecting lens, a slide holder, condensing lenses and lamp, a casing that supports the guides for said slide holder and incloses the condensing lenses and lamp, said casing having a removable portion abovcsaid condensing lenses and adapted to permit access to the same.

6. A stereopticon comprising a projecting lens, a slide holder, condensing lenses and a lamp, a casing that supports the guides for the slide holder and incloses the condensing lenses and lamp, and a single base support ing said casing; said casing having a removable portion above said condens ng lenses and adapted to permit access to the same.

7. A stereopticon comprising a projecting lens, a transversely movable rotatable slide holder, condensing lenses and a lamp, a casing that supports the guides for the slide holder and incloses the condensing lenses and lamp, and a single base supporting said casing; said casing having a removable por tion above said condensing lenses and adapted to permit access to the same.

8. A stcrcopticon comprising a projecting lens. a slide holder and condensing lenses, a casing that incloses said condensing lenscs and extends a suitable distance to the rear thereof, a lamp comprising carbon electrodes and a housing that carries and incloses the arcing ends it said electrodes and that is supported by and is telescopically adjustable in the rear portion of said casing.

0. A stereopticon comprising projecting lens. a rotatably adjustable slide-holder, condensing lenses. a lamp and a casing supporting the guides for said holder and inclcsing said condensing lenses and lamp, a single base supporting said casing, adjustable means supportcd by said base for supporting said projecting lens independently of said casing, a longitudinally adjustable rear end for said casing, and carbon-electrodes carried thereby.

10. A stereopticon comprising a projecting lens, a slide holder and condensing lenses, a casing that supports the guides for the slide holder and incloses said condensing lenses and extends a suitable distance to the rear thereof, a single base supporting said casing, a lamp comprising carbon electrodes and a housing that carries and incloses the arcing ends of said electrodes and that is supported by and is telescopically adjustable in the rear portion of said casing.

11. A stereopticon comprising projecting lens, a slide-holder, condensing lenses, lamp, a casing inclosing said holder, and condensing lenses, a rear end for said casing telescopically adjustable into and out of the same, insulated carriers mounted in said rear ends on either side of the center thereof, the axes of the bores of which are at an angle to and intersect at a point intersected by the focal axis of said lens, and removable carbon-electrodes adjustable longitudinally and rotatably in the bores of said carriers.

12. A stercopticon comprising projecting lens, a slide holder and condensing lenses, a. casinginclosing said holder and condensing lenses, a rear end for said casing that is supported by and is telescopically adjustable into and out of the same, insulated carriers having suitable bores mounted in said rear end on either side of the center thereof, carbon electrodes mounted in said carriers, means that press laterally against said elec trodes and retain them in their adjusted positions within the bores of said carriers, said bores having their axes arranged at an angle and intersecting at the focal axis of said lenses, said electrodes being adjustable longitudinally and rotatably in said bores.

13. A stereopticon comprising projecting lens. a slide-holder, condensing lenses. lamp, a casing inclosing said holder and condensing lenses, a rear end for said casing that is supported by and is telescopically adjustable into and out of the same. insulated carriers mounted in said rear end on either side of the center thereof, devices contained Within the bores of said carriers, suitable electrical contacts arranged at right angles to and connected with said devices. the axes of the bores of which are. at an angle to and intersect at a point intersected by the focal axis of said lens. and removable carbonelcetrodcs adjustable longitudinally and rotatably in the bores of said carriers.

14. A stercopticon comprising projecting lens, and condensing lenses and lamp, a casing inclosing said condensing lenses and lamp, and a rotatably adjustable slideholder comprising a circular frame mounted and movable in suitable channels in the front of said housing and between said condensing 3Q micd coni'cnli'ic cylinders each having :1 serics of ncrform-ions lhcrein. an annulus to which llik forward ends of said cylinders arc swim-ml and a i'ing'to which the F021! ends lhcrcoi aw secured. and a rear cnd or head lcic wiicilly uiljuslnhlc inlo tho innermost of lcyliniiers.

ions. :1 filliirllfilllQl", condensing lnnscs and mm :1 i'i'zingcil conccn'li'ic to thc focal axis. :1, mlsing ici suicl lump comprising lwo scpzn i'iilci'l c hcnlric cvlimlcrs each having a serim of glcrfomlions thci'cin, an annulus l0 "winch i'hc forum-(l cinls of said cylinders are no? 2? ring to which the roar cnds ii'lil'i'lli m1 swim-ii. mill :1 FUJI end or head, 1

in v2 niil annulus mnl ring, and rods niml lo the marginal portion of said run cmi or hcud adapted to tclcscopiwilly cngllgc will tubes, to telescopically udjnst said rcar cinl in and out of the inncrmost i s i i cylinders.

11. stcrcoplicon comprising :1 single lmsc n sznlillc pivotally connected thereto, a

l min semi-circular pillow and a corresponding rewnmvalile can having circumferential l thci inncc (lICUHIfQKlUCQS in the cr c plane and comnmnicaling l oiling condensing lenses rcnsovicri in wiiil gruovcs, a. slirloholilci 1 r lci-s in front of mid ca nll;

" lump casing! al hc i-czn' ccincnli-ic to thc will pawl is uslyinlc m and cxu. irlzs' iin z'i'oi, a single base supporting coming, a lamp vozngwi ing lcnsc i and Win nil Elli iliiiifilbl i (lismncc in the your [lacrol vm'mn-clccicivics and a housing i'hm sup wolf illill incioscs the arcing culls of la sonic 11ml is snpnm'iwl in and. lclcscopirol vi n il in tin: mu extension of sun can .l. sicrcoplicon coin iwising 'g'icojecling I ing, said electrodes being longitudinally adjustable in. the war nil of said housing.

:20. A slici'eopticon comprising a project ing lens, a slide holder and condensing lcnscs 1 casing that incloses said condensing lcns'cs nn l cxicnds a suitable dis-lance to the rear llzcreof, carbon clcicli'n'd'es and a housing that snnpori's sziiil carl'ionelectrodes in the rear cml thcreof and incloss the arcin ends of the same and, is supported by ans telescopically adjustable in the rear exten' sion of said casing, frictional deviccs in the rear ends. of said housing; that inclose said electrodes which .lailei' are adjustable longitudinally in. their support 21. A sn'rmptii-oncomprising a projecting' lens, a lizlc ladder and condensing lenses, a casing that lllPifiMS said condensing lenses and exlcnds :1 suitable distance to the rear llicrcof, cm'i1on-clecli=odcs and a housing tlml is snpporlcd by said casing and is conslrinrtcil to support said carbon electrodes (lisposcil lengthwise at an angle to each otlni', and at angles in the focal axis of the icnsi-s and in the smnc horizonial plane, and 25:. a point intersected by i so that they on;

said axis.

111. A, SiQIOOfJll QU comprising a projecting icns n sliilc holder and condensing lcnsi: a. casing that incloscs said condensing lenses and cxtcinls a suilahlc distance to the roar thereof, a single 'hasc supporting said casing, carbon clcctroclcs and a housing that is supporlcil h said casing and is construct- ((l to support the mu'l'mn, electrodes. :lisposed lci'iigjihwisc mi mulls in each other, and at angles to the ul axis of the lenscs and in the same hmi lizii plane, and so that. they an" M l pain; I: n. cal by said axis.

oplicnn con'iprising project- I-lilb llOii'lPX' and coniiensing wrong ilnit inloscs aid condensing lcnscs and nxicmls a 21 m ihcrcoi, cnrh n \I log than, is mnpportm iifiififiiliuicii, to ma y Jli mill carbon clcctrorles disposed lcnglln c an angle in {es-ch ntliciy and Hi ongcs lhc focal i wow ho i'ce snilszblc distnncc to the trodes and a lions My said casing and 1s:

poi-fol? in mnl icliw'o w-uiii" in l l i l boih .longiimlinaiiy zaznl rotzitzibly,

20. A stereopticon comprising a projectin; lens, a slide holder condensing lenses, and lamp, a casing int-losing said lamp, :1 rear end therefor supported by and telescopically adjustable into and out of the same, carbon electrodes in said rear end, and frictional members for retaining said electrodes in their respective adjusted positions.

27. A stereopticon comprising a projecting lens a slide-holder, condensing lenses, and lamp, a casing inclosing said lamp, a rear end therefor that supported by and telescopically adjustable into and out of the I same, carbon-electrodes carried by and inclosed in said rear end that are adapted to be 15 l independently adjusted both longltudinally E and rotatably, and frictional members for l retaining, said electrodes in their respective adjusted positions.

In witness whereof I have hereunto Set my 20 hand this 16th day of February, 1912.

ALEXANDER FERDINAND VICTOR. 'itnesses:

Sum. G. Bose, Manonnlu'rn Il\SSl-IT'1. 

